Wentworth Mercer 2000 Pocket Pro Super King Mattress
The Wentworth Mercer 2000 Pocket Pro Mattress combines 2000 pocket springs with wool, cashmere and silk comfort layers, which means firm support with a soft, natural-fibre feel on top.
- Firm feel for back sleepers
- Natural fibres regulate temperature
- Flip & rotate to spread wear
£839
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Wentworth Mercer 2000 Pocket Pro Mattress
More available sizes
Mattress details
Mattress
Wentworth Mercer 2000 Pocket Pro Mattress
Size
Firmness
Firm
Construction
Natural
Pocket Spring
Wool
Depth (cm)
29
Layers
4
Layer Details
Wool, cashmere & silk layers
Two layers of a wool, cashmere and silk blend form the top. They give a plush, cosy surface over the firm feel beneath.
Polyester fibre layers
Two further layers of polyester fibres add comfort and increase airflow, which means the mattress breathes better.
Polyester & cotton layers
Two layers of polyester and cotton wick away moisture, which helps you stay drier through the night.
Pocket spring core
A core of 2000 pocket springs in cloth pockets that adapt to the weight and movement of every sleeper. This gives the firm, supportive base.
Layer details from mattressonline.co.uk product page, November 2026.
Key benefits
- Room for a restless partner: With 90cm each for two sharing, you get 15cm more each than the UK king, so a partner who fidgets all night is far easier to sleep through.
- Space when the children arrive: A small child climbing in at 3am can settle between you on a UK super king without anyone ending up clinging to the edge.
- Firm support across the full width: The 2000 pocket springs adapt to the weight and movement of each sleeper, which means two adults and a visiting child each get support on their own part of the mattress.
- Space for a dog on the bed: If a large dog sleeps on the bed as a matter of routine, the UK super king's 180cm width gives it a spot of its own rather than across your legs.
- Flippable, with a caveat: You can flip and rotate it to spread the wear, although at 180cm wide a UK super king is a two-person job and needs clear floor space.
This size suits you if...
You share the bed every night with a partner who tosses and turns, or children and pets regularly join you before morning, and your bedroom comfortably clears our suggested minimum of 3m x 2.9m.
Consider another size if...
Your room is tight on space, or your stairs and landing turns are narrow. We'd recommend the UK king instead, where we suggest at least 2.7m x 2.9m.
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FAQ's
How much bigger is a UK super king Wentworth Mercer 2000 Pocket Pro than a king?
The UK super king is 30cm wider than the UK king, and the two are the same length. That works out at 90cm each for two sharing, compared with 75cm each on the UK king, so each of you gains 15cm of width.
What size room do I need for a UK super king mattress?
We suggest at least 3m x 2.9m. Check where your door swings and where any radiators sit before you buy, because at 180cm wide this mattress takes up most of one wall, and bedding at this size costs a little more too.
Is a UK super king big enough for two adults and a child?
For a young child who joins you partway through the night, yes. Each adult has 90cm to start with, so there's room to make space in the middle. The pocket springs adapt to each sleeper's weight separately, so the child gets support on their own patch of mattress.
Will a UK super king Wentworth Mercer 2000 Pocket Pro fit in a loft conversion bedroom?
It can, but the sloped ceiling usually decides which wall the bed goes against, since you need full headroom at the side you get in. Measure the flat floor area against our 3m x 2.9m suggestion, and check the stair turns on the way up, as this is a wide mattress to carry.
Is it hard to flip a super king pocket spring mattress?
At this size, yes, it takes some effort. The Wentworth Mercer 2000 Pocket Pro is double-sided and designed to be flipped and rotated through the year. On the UK super king you'll want two people and some clear floor space around the bed, rather than trying it alone.